240 Programmed Temperature Vaporization Inlet (PTV)
Replacement procedures
32 of 46
Jun 2001
Inlets
Agilent 6890 Gas Chromatograph Service Manual
9. Check the entire system again for leaks; if necessary, carefully retighten
the guide cap with the syringe needle inserted slightly more and/or
replace the Kalrez seal.
If the head leaks when a syringe is inserted, the Teflon ferrule is the
problem. If the head leaks without a syringe inserted, the seals may need
to be replaced.
Replacing the Teflon ferrule
1. Unscrew the guide cap from the septumless head and remove the Teflon
ferrule.
Figure 240-21 Installing a Teflon ferrule
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